19 mm - ¾" - Vintage, Corkscrew Curls One Size Does Not Fit All When It Comes To Twisters! At long last, ISO Beauty has a twister w/cool tip specially designed for those with short hair. The 19mm has a barrel size perfect for creating effortless, natural-looking curls on short hair in just minutes. Utilizing the unique press action, Tourmaline Ceramic Technology and a clip-free wrap-and-go design, curling shorter locks is now easier than ever! As a bonus, the 19mm twister includes a Heat-protective Glove and a Tangle-Free Swivel Cord that make it easy to style with.